The Boston Hotel is literally steps just outside the JR Kusatsu train station. If traveling by train, the convenience really can't be beat.
The room was very clean and well maintained, though small as with many Japanese rooms. Only 2 people can fit so we had 2 rooms for a family of 4 and it worked great. There were slippers and a sleeping gown to freely use and the selection of toiletries was surprisingly robust.
The service was exceptional as we had no trouble speaking with the lobby staff and even the cleaning crew were all smiling and so helpful. There is a Lawson's convenience store attached to the hotel so late night munchies, toiletries, or a run to the ATM are without worry.
The bottom floor has a mid-size restaurant. In the morning it offers a full buffet breakfast with a huge array of foods like scrambled eggs and sausages, misi soup and fish, steamed vegetables, cereals and breads. I highly recommend the breakfast for it's selection and quality, especially if it is included.
This is a wonderful hotel just a 20 minute train ride from Kyoto station that won't be nearly as crowded, provides excellent service, and is a great jumping point for many of your adventures in Japan. The trains are normally not as packed as other lines around Kyoto.